A floor truss can be designed to span 30 or more feet with ease.
How to set floor trusses on a wall.
Each truss member is numbered and the first step is to transfer the numbers to the top wall plates according to the diagram.
This comes in handy if you desire a.
Notice how the rim joist sits on the inside of the stairwell wall so the floor joists can bear on the wall.
What is the proper way to attach an interior basement wall to floor trusses both perpendicular walls and walls that run parallel with the bottom chord and fall between the trusses.
Stairway opening in floor joists.
You can t notch or drill them anywhere.
In fact floor trusses are lighter and easier to maneuver than solid heavy joists.
The guidelines for these are shown in fig.
The truss manufacturer can build them so strong that there s no bounce to the floor at all.
B the guidelines are simple.
Inclined or horizontal member that establishes the bottom of a truss usually carrying combined tension and bending stresses.
I have been told to nail directly to the trusses and i have been told to leave a 1 8 inch to 1 4 inch gap between the top plate and the bottom chord.
The two joists at the top of the stairs provide additional support to hold the stair stringers.
For those working with the less common open web or floor truss joists fig.
Structural support usually a beam wall or post that is designed by the building designer to carry the truss reaction loads to the foundation.
Elements that make a floor truss.
Truss installation isn t difficult.
Framers must take care however to set the trusses to the manufacturer s.